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Some simplified NP-complete problems

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Garey, M. R., Johnson, D. S., Stockmeyer, L.·1974·Proceedings of the sixth annual ACM symposium on Theory of computing - STOC '74

Abstract

It is widely believed that showing a problem to be NP-complete is tantamount to proving its computational intractability. In this paper we show that a number of NP-complete problems remain NP-complete even when their domains are substantially restricted. First we show the completeness of SIMPLE MAX CUT (MAX CUT with edge weights restricted to value 1), and, as a corollary, the completeness of the OPTIMAL LINEAR ARRANGEMENT problem. We then show that even if the domains of the NODE COVER and DIRECTED HAMILTONIAN PATH problems are restricted to planar graphs, the two problems remain NP-complete, and that these and other graph problems remain NP-complete even when their domains are restricted to graphs with low node degrees. For GRAPH 3-COLORABILITY, NODE COVER, and UNDIRECTED HAMILTONIAN CIRCUIT, we determine essentially the lowest possible upper bounds on node degree for which the problems remain NP-complete.

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Metadata

Authors
Garey, M. R., Johnson, D. S., & Stockmeyer, L.
Venue
Proceedings of the sixth annual ACM symposium on Theory of computing - STOC '74
Publisher
ACM Press
Published
1974
Pages
47-63
OpenAlex
W2032950184
Cited by
614
References
14
FWCI
6.41
Type
conference paper
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Some simplified NP-complete problems. https://app.cochat.ai/papers/10.1145/800119.803884
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Garey, M. R., Johnson, D. S., & Stockmeyer, L. (1974). Some simplified NP-complete problems. Proceedings of the sixth annual ACM symposium on Theory of computing - STOC '74. https://doi.org/10.1145/800119.803884

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